Hydrofining catalyst composition and preparation method thereof

Abstract

The invention discloses a hydrofining catalyst composition and a preparation method thereof. The catalyst composition is a bulk phase hydrofining catalyst and comprises hydrogenation active metal components W, Ni and Mo, an SAPO-11 molecular sieve and aluminum oxide, the content of surface phase active metal is high, the active site density is high, active metal is uniformly dispersed, the active metal is well coordinated and matched, the utilization rate of the active metal is high, and the pore structure of the catalyst is reasonable. The catalyst composition is high in mechanical strength, has high hydrodesulfurization and hydrodenitrogenation reactive properties, and is particularly suitable for being used in ultra-deep hydrodesulfurization and denitrification reactions of diesel fractions.

Description

technical field

[0001] The invention relates to a hydrogenation refining catalyst composition and a preparation method thereof, in particular to a high-activity bulk phase hydrogenation treatment catalyst composition and a preparation method thereof. Background technique

[0002] At present, in the world, crude oil is becoming increasingly heavy and inferior, coupled with the continuous development of the world economy and increasingly stringent environmental protection regulations, it is necessary to produce a large amount of light clean fuel. The development and use of ultra-low sulfur or even sulfur-free gasoline and diesel is the trend of clean fuel development in the world today. The use of traditional hydrodesulfurization catalysts can also achieve deep desulfurization or even ultra-deep desulfurization of diesel oil by increasing the severity of the reaction, such as increasing the reaction temperature, hydrogen partial pressure or reducing the reaction space velocity...

Examples

Embodiment 1

[0047] Dissolve nickel chloride in clean water respectively to prepare solution A. The weight concentration of NiO in solution A is 19g / L. Dissolve ammonium metatungstate and ammonium molybdate in clean water respectively to prepare a mixed solution B. In mixed solution B, WO 3 The weight concentration is 39g / L, MoO 3 The weight concentration is 16g / L. will contain Al 2 o 3 Add 500ml of 20g / L sodium metaaluminate solution to solution A under stirring, keep the gelling temperature at 60°C, control the pH value at 7.8 at the end, and control the gelling time at 60 minutes to generate a slurry containing nickel and aluminum precipitates I. Add 1000mL of clean water into the reaction tank, and 2 o 3 500 ml of 20g / L sodium metaaluminate solution and solution B are added into the reaction tank in parallel flow, the gelling temperature is kept at 60°C, the pH value is controlled at 7.8 during the concurrent gelling reaction process, and the gelling time is controlled at 60 minu...

Embodiment 2

[0049] According to the method of embodiment 1, press the component content ratio of catalyst composition B in table 1, add nickel nitrate, zirconium oxychloride solution in dissolving tank 1, prepare working solution A, add in dissolving tank 2 Ammonium tungstate and ammonium molybdate were used to prepare working solution B. will contain Al 2 o 3 Add 600ml of 20g / L sodium metaaluminate solution to solution A under stirring, keep the gelling temperature at 55°C, control the pH value at 8.0 at the end, and control the gelling time at 50 minutes to generate a slurry containing nickel and aluminum precipitates I. Add 600mL of clean water into the reaction tank, and 2 o 3 800 ml of 15g / L sodium metaaluminate solution and solution B are added into the reaction tank in parallel flow, the gelling temperature is kept at 50°C, the pH value is controlled at 7.8 during the concurrent gelling reaction process, and the gelling time is controlled at 60 minutes. Slurry II containing tu...

Embodiment 3

[0051] According to the method of Example 1, according to the component content ratio of the catalyst composition C in Table 1, nickel chloride and phosphoric acid solution are added to the dissolution tank 1 to prepare the working solution A, and metatungstic acid is added to the dissolution tank 2 Ammonium and ammonium molybdate to prepare working solution B. will contain Al 2 o 3 Add 500ml of 18g / L sodium metaaluminate solution to solution A under stirring, keep the gelling temperature at 45°C, control the pH value at the end of the process at 7.6, and control the gelling time at 60 minutes to generate a slurry containing nickel and aluminum precipitates I. Add 1000mL of clean water into the reaction tank, and 2 o 3 1000ml of 10g / L sodium metaaluminate solution and solution B are added to the reaction tank in parallel flow, the gelling temperature is kept at 60°C, the pH value is controlled at 8.0 during the concurrent gelling reaction process, and the gelling time is c...

technical field

[0001] The invention relates to a hydrogenation refining catalyst composition and a preparation method thereof, in particular to a high-activity bulk phase hydrogenation treatment catalyst composition and a preparation method thereof. Background technique

[0002] At present, in the world, crude oil is becoming increasingly heavy and inferior, coupled with the continuous development of the world economy and increasingly stringent environmental protection regulations, it is necessary to produce a large amount of light clean fuel. The development and use of ultra-low sulfur or even sulfur-free gasoline and diesel is the trend of clean fuel development in the world today. The use of traditional hydrodesulfurization catalysts can also achieve deep desulfurization or even ultra-deep desulfurization of diesel oil by increasing the severity of the reaction, such as increasing the reaction temperature, hydrogen partial pressure or reducing the reaction space velocity...

Examples

Embodiment 1

[0047] Dissolve nickel chloride in clean water respectively to prepare solution A. The weight concentration of NiO in solution A is 19g / L. Dissolve ammonium metatungstate and ammonium molybdate in clean water respectively to prepare a mixed solution B. In mixed solution B, WO 3 The weight concentration is 39g / L, MoO 3 The weight concentration is 16g / L. will contain Al 2 o 3 Add 500ml of 20g / L sodium metaaluminate solution to solution A under stirring, keep the gelling temperature at 60°C, control the pH value at 7.8 at the end, and control the gelling time at 60 minutes to generate a slurry containing nickel and aluminum precipitates I. Add 1000mL of clean water into the reaction tank, and 2 o 3 500 ml of 20g / L sodium metaaluminate solution and solution B are added into the reaction tank in parallel flow, the gelling temperature is kept at 60°C, the pH value is controlled at 7.8 during the concurrent gelling reaction process, and the gelling time is controlled at 60 minu...

Embodiment 2

[0049] According to the method of embodiment 1, press the component content ratio of catalyst composition B in table 1, add nickel nitrate, zirconium oxychloride solution in dissolving tank 1, prepare working solution A, add in dissolving tank 2 Ammonium tungstate and ammonium molybdate were used to prepare working solution B. will contain Al 2 o 3 Add 600ml of 20g / L sodium metaaluminate solution to solution A under stirring, keep the gelling temperature at 55°C, control the pH value at 8.0 at the end, and control the gelling time at 50 minutes to generate a slurry containing nickel and aluminum precipitates I. Add 600mL of clean water into the reaction tank, and 2 o 3 800 ml of 15g / L sodium metaaluminate solution and solution B are added into the reaction tank in parallel flow, the gelling temperature is kept at 50°C, the pH value is controlled at 7.8 during the concurrent gelling reaction process, and the gelling time is controlled at 60 minutes. Slurry II containing tu...

Embodiment 3

[0051] According to the method of Example 1, according to the component content ratio of the catalyst composition C in Table 1, nickel chloride and phosphoric acid solution are added to the dissolution tank 1 to prepare the working solution A, and metatungstic acid is added to the dissolution tank 2 Ammonium and ammonium molybdate to prepare working solution B. will contain Al 2 o 3 Add 500ml of 18g / L sodium metaaluminate solution to solution A under stirring, keep the gelling temperature at 45°C, control the pH value at the end of the process at 7.6, and control the gelling time at 60 minutes to generate a slurry containing nickel and aluminum precipitates I. Add 1000mL of clean water into the reaction tank, and 2 o 3 1000ml of 10g / L sodium metaaluminate solution and solution B are added to the reaction tank in parallel flow, the gelling temperature is kept at 60°C, the pH value is controlled at 8.0 during the concurrent gelling reaction process, and the gelling time is c...